Louver ventilator



Dec. 31, 1940. H. o. NELSON 2,227,360

' LOUVER VENTILATOR v Filed Oct. 11, 1938 5 Sheets-Sheet 2 i FE-E- EE- 37 55 :5 7.6 INVENTOR. 4 HEIPH U. N21 5 cm.

A 04* 2mm ATTORNEYS: I

Dec. 31, 1940.

H. o. NELSQN LOUVER VENTILATOR Filed Oct. 11, 1938 s Sheets-Sheet s I INVENTOR. l arr' [lNe'Ls-mn.

ATTORNEYS.

Patented Dec. 31, 1940 UNITED STATES PATENT OFFICE- I LOUVER VENTILATOR. Harry 0. Nelson, Miami Beach, Fla. Application October 11, 1938, Serial No. 234,468

' 5 Claims. (01. 189-69) The invention relates to improvements in louver ventilators and the primary object is to devise a transparent louver ventilating window which will provide ventilation and light while 5 giving protection against burglars and the elements. Another object of the invention resides in the provision of a louver ventilator wherein the louvers are so arranged as to not require atten- 10 tion except in extreme weather conditions.

A further object of the invention is to provide a screened louver ventilator so constructed that the louvers may be adjusted without interference by the screen.

5 Yet another object is to provide a louver ventilator having alternately arranged stationary and pivoted louvers.

A still further object of the invention resides in the provision of a transparent louver venti- 20 lating window which is architecturally attractive.

Another object is to provide a. glass louver ventilating window so constructed as to facilitate the replacement of broken louvers.

35 Another important object of the invention is to devise a louver ventilator mounted in a stationary frame for disposition in a wall opening.

A further important object of the invention is to provide a louver ventilator mounted in a l sash for installation in a framed wall opening.

An additional object of the invention resides in the provision of a louver ventilator for attachment to a frame-supported sash.

A further object is to provide louver ventilator [,5 constructions for use in new work or as improvements to existing structures, and in conjunction with casement or other types of windows, whether of metal or wood. J

Other objects and advantages of the invention m. will become apparent during the course of the following detailed description, taken in connection with the accompanying drawings, forming a part of this specification, and in which drawings- ,5 Figure 1 is an exterior view in elevationnf a preferred form of my adjustable glass louver window and which I term an attachment to standard window sash. the same being shown.

applied to a frame-supported sash.

0 Figure 2 is an interior view in the window illustrated in Figure 1.

Figure 3 is a horizontal sectional view substantially on the line 3-3 of 'Figure 2.

elevation of Figure 4 is a vertical sectional view of the win- 5 dow with the louvers open.

Figure 5 -is a view similar to Figure 4'but t Figure is a sub-assembly view in vertical section of a louver holding member preferably forming a part of the invention.

Figure 11 is a perspective view of the louver tilting member. i 5

v Figure 12 is a vertical sectional view of a modified form of my adjustable glass louver window as attached to a frame-supported window sash.

Figure 13 is an interview view in elevation of a different form of my adjustable glass louver window, and which I term a "sash attachment to standard window frame," the same being shown in association with a window frame.

Figure 14 is a fragmentary horizontal sectional view substantially on the line "-14 of 15 Figure 13. 1

Figure. 15 is a vertical sectional view of the window construction illustrated in Figure 13.

Figure 16 is an interior view in elevation of a difierent form of my adjustable glass louver windew, and which I term a stationary unit.

Figure 17 is a fragmentary horizontal sectional view substantially on the line I'|II of Figure 16.

Figure 18 is a, vertical sectional view' of the stationary unit and showing its application to a. wall opening. I

In the drawings, which show preferred and modified forms of the invention, and wherein similar reference characters denote corresponding parts throughout the several views, the letter R A designates a standard window frame; '3 a. standard window sash; C an attachment to the sash B;' C a different attachment-to the sash B; D a sash attachment to the frame A; while E designates a stationary unit for mounting in 3d a wall opening.

The frame' A and sash B may be of any suitable cross-sectional shape and of any suitable material and the sash B, when employed, may be hung in any desired manner for opening and 40 closing movement relative to the frame A. In the examples'shown, the material employed is metal and the sash are of the outwardly swinging casement type. The frame A may includethe usual asymmetrically flanged bars or beams utilized at themeeting stile, and providing inner and outer flanges -3l and a connecting web 32. Secured inwardly of the marginal edges of the inner flangesfii and 30 which define each window opening is,-a.conventional screen 33 in- 55 cluding a border frame 34;

Referring particularly to the formsof inven-. tion illustrated in Figures 1-12, the sashB preferably is formed of asymmetrically flangedbars -.or beam 35 providing inner and outer flanges 5 3831 and a connecting web 38. Pivotally seeming the sash B for outward swinging movement relative to the frame A are the usual extension hinges 38. Secured to the inner flange 26 at the sill portion of the frame A, is a suitable casement operator 48 including the usual lever 4| extending beneath the screen for co-action with the inner and outer flanges of the sash B. The usual glass and muntins (not shown) are removed from the sash B to provide a clear opening for the accommodation of the attachment C or C.

Referring first to the attachment C, the same comprises a pair of hollow side members 42 each including a channel bar 43 and a closure plate 44 secured in abutment with the inner and outer flanges 45-46 of the channel bar, as, by screws 41, the outer flange 48 including a marginal edge portion 48 extending beyond the closure plate 44. The attachment '0 also comprises a hollow head 48 of polygonal shape in cross-section and including a downwardly and outwardly inclined wall 58 and an inwardly extending 'flange 5| having a depending skirt 52. The attachment C further comprises a sill 53 including an upwardly and inwardly tapered flange 54 and a downwardly and outwardly inclined apron 55. The head, sill and side channels are drilled to provide openings 58 .to facilitate attachment to the sash B, as by cap screws 51.

Riveted or otherwise secured to the closure plates 44 are stationary louver holders 58 including flanges 58 cut away intermediate their ends to provide notches. 58. A web 6| is provided to close the lower end 62 of each holder 58, the upper end 83 being open. Secured to opposite flanges 58 and projecting laterally therefrom at opposite ends of the holders are arcuate leaf springs 64. Pivotally secured to the closure plates, as by pins 85, are swinging or tilting louver holders 68, each including a closed lower end 81 provided with a lateral opening 88, and a truncated or obliquely terminating open upper end 88. These louver holders 58 and 68 are disposed in alternate relation to one another intermediate the ends of the closure plates 44. Pivotally secured to the lower end portions of the closure plates are holders 66', relatively shorter than the holders 65, but otherwise having the same characteristics. Secured to the upper end portion of each closure plate 44 is a holder 18 including a lower section II pivoted to the plate at its closed lower end 12, as by a pin 13, the holder further including an upper section "of angular shape in cross section and including aflange 15 securable as by screw 16 to the head 48, in a manner whereby the companion flange'l'l is disposed in spaced parallel relation to the inclined wall 58.

The louvers 18 carried by the stationary-andtilting holders 58 and 86 are of a width greater than that of the louvers 18 carried by the holdposed in parallel or open position due to interference of the screen with lifting of the louvers from the holders. As the screen is readily detachable from the inside of the window, any of the louvers except that carried by the upper holders 18 may be lifted out for cleaning or replacement. The uppermost louver may be removed'by withdrawing the screws 18 and de-" taching the angular holder sections 14, whereby the lower holder section II will swing inwardly to permit clearance of the upper louver past the head flange and skirt 52, as it is lifted out of the holder.

Means is provided to control the pivotal relation of thetiltable louvers relative to the stationary louvers. Disposed within the hollow side member 42 preferably at the hinge side of the sash B, is an elongate member 88 provided with longitudinally spaced pins 8! projecting from the inner side 82 thereof. Projecting from the opposite side of the member 88 is a pin 83, which may constitute an extension of one of the pins 8|. Formed in the plate 44 which encloses the member 88 is a plurality of arcuate slots 84 coaxial with the pivot pins 85 andthrough these slots the pins 8| extend for connection with the pivotal louvers, as by projection of the pins into openings 85 provided adjacent the upper ends of the pivotal louver holders. Extending through arcuate slots 88-81, shownin Figure 3 of the drawings, is the pin 88 which terminates between the sash B and frame A when the sash is in its closed position. v

Secured to the inner flange 28 of the frame A, and outwardly of the screen frame 84 is a control lever 88 including a handle portion 88 and a swingable arm 88 adapted to engage the pin 83 when the sash is in closed relation to the frame A. Threaded on the fulcrum pin 8| of the control lever is a wing nut .82 for releasably securing the lever in any desired position.

In the attachment C the springs 84 carried by the stationary holders are of a length and arcuacy to constantly remain in contact with the sides of adjacent pivoted holders. The attachment C contacting the outer surface of the lowermost louver 18. This strip 88 provides additional protection against the weather.

By depressing the handle 88, the arm 88 will swing outwardly and, through engagement with the pin 83, the member "will carry the pins 8| along the arcuate slots 84, whereby to tilt the swing-able louvers toward the stationary louvers, the opposite marginal edges of the tiltable louvers when closed being accommodated in the notches 88 of the stationary louvers 58, or between the sections II and 14 of the stationary louvers 18, as the case may be. I

By releasing the handle, the louvers will return to open position, due to the weight of the elongate member 88. The springs 84 of the attachment C will also assist in returning the louvers to open position.

With this arrangement, it is not necessary to provide a positive connection between the operating lever 88 and the louver tilting member 88, such as would interfere with movement of the sash B relative to the frame A. I

With my sash attachment D, the sash B is eliminated and connection is made directly to the frame A, as by suitable hinges I88 including removable pintles- MI and leaf sections I82 which may be secured as by rivets I88.

It will be noted that the sash attachment D is provided with a head section I04, a sill section I05 and side sections I06, having cross-sectional shapes which are substantially similar to the respective combined cross-sectional areas of the head, sill and jamb sections of the attachment C plus the sash B. For example, the inclined wall I01 of the head I04 is similar to the wall 50 of the previously described attachment C, and the all) apron I08 of the sill section I05 is similar to and functions in the same manner as the'apron 55 of the attachment C. The louver arrangement is identical in the attachments C and D and the parts thereof bear like reference characters.

Housed within the side section I06 preferably adjacent the hinges, is a louver tilting member 80 having pins 8| operating through slots I09 in side plates N0, the pin 83 extending through a slot III in the side section I06 to a point between the side section and the frame A. The control lever 80 is disposed on the frame A and includes a swinging arm 90 extending between the frame A and sash attachment D for coaction with the louver tilting member 80 in a manner similar to that described in connection with the attachment 0. I

As for my stationary unit E, shown in Figures 16-18 of the drawings, the same embodies a hollow frame II2 which is adapted for mounting in a wall opening H3. The head section III includes an inclined wall N5 and-the sill section IIB includes an inclined wall III constituting an apron.

Multiple ventilator units E may be provided, if desired. In the example shown, the meeting stile II8 between the multiple units house individualously described attachments C and D. Openings II9 preferably are provided in opposite sides of the frame I I2 and these openings are covered with plates I20 similar to the plates 44. If desired,

' most louver is relatively short and includes a lat- 'erally offset tab portion I24 removably secured all) to the head section as by screws I25.

Frorn'the foregoing it will be seen that I have provided improved forms of adjustable glass louver ventilators embodying generic features of construction and which ventilators may be employed as attachments to existing standard structures or in new-work.

Various changes may be made in the forms of invention herein shown and described, without departing from the spirit of the invention or the scope of the following claims:

I claim:

1. A ventilator comprising a frame, a plurality of spaced parallel louver panels fixed transversely within the frame, a plurality of louver slats disposed transversely within the frame and in alternate spaced relation to said panels, means securing said slats for pivotal movement about axes transversely of the frame and intermediate opposite portions of said slats, whereby said opposite 7o portions at their free marginal edges may swing ,into and out of engaging relation with said panels, and resilient means carried by said panels and urging the opposite portions of said slats away from engaging relation with said panels.

' 2. In a ventilator, a frame including opposite sides and a sill member, a louver member extending transversely between said sides and superjacent said sill member, meanspivotally securing said louver member for swinging movement about an axis intersecting said sides, .a resilient strip extending between said sides and in overlapping relation to said louver member and sill member, and means securing said strip along a marginal side portion thereof to one of said members, in transversely tensioned relation so that said strip along its opposite marginal side portion will contact the other of said members.

3. In a ventilator, a frame including opposite sides and a sill member, a louver member extending transversely between said sides and superjacent said sill member, means pivotally securing said louver member for swinging movement about an axis intersecting said sides, a resilient strip extending between said sides and in overlapping relation to said louver member and sill member, and means securing said strip along a marginal side portion thereof to said sill member, in transversely tensioned relation so that said strip along its opposite marginal side portion will contact said louver member.

4. In a ventilator, a frame including opposite side members and a head member, said head member being shaped to provide a pair of plane surfaces forming a re-entrant dihedral angle in v the lower side of the head member, a pair of holders each including a mouth end portion, said holders bein disposed one adjacent each of said side members, a louver panel having opposite end portions slidable into and out of said holders through the mouth end portions thereof, means pivotally securing said holders for swinging movement about an axis intersecting said side members and in a manner whereby said louver panel, upon positioning of its end portions within said holders, may be swung to an angular position within the confines of said dihedral angle and in which position said panel is limited against sliding movement out of said holders throughthe mouth end portions thereof, and means securing said louver panel in said angular position.

5. In a ventilator, a frame including spaced sides, a plurality of channel-shaped holders having spaced flanges provided with notches intermediate their ends, a plurality of louvers each ineluding opposite end portions, said end portions being positioned between said flanges, means securing the holders to the sides of the frame so as to support said louvers in spaced parallel relation transversely of the frame, a plurality of slats disposed in alternate relation to said louvers, and' HARRY O. NEISON. 

